The K&H Lectro Kennel 12″ x 18″ heated Pad is constructed of rugged ABS plastic with a steel wrapped cord, the Lectro-Kennel can lie flat on the doghouse floor or be attached to the wall. An internal thermostat keeps the temperature at a desirable 100 degrees when in use. The Lectro-Kennel also comes with a free removable, washable fleece cover. *Indoor or outdoor use. Contains: 40 Watts 5 1/2 foot abrasion-proof cord Ideal whelping pad when used with optional Lectro-Temp control! Thermostatically controlled to keep the pad within your pet’s body temperature range High-impact ABS plastic makes pad durable, easy to clean and water resistant